Machine for swaging iron



J. T. WILLMARTH.

Swaging Metals. m 15,588. j I Paten ted Aug; 19, 185.6.

i asses In-gento'r:

UNITED STATES PATENT onmon.

JOHN T. WILLMARTH, OF WORCESTER, MASSACHUSETTS.

MACHINE FOR SWAG-TING IRON.

Specification of Letters Patent No. 15,588, dated August 19, 1856.

To all whom it may concern:

Be it known that I, JOHN T. WILLMARTH, of Worcester,in the State ofMassachusetts, have invented certain new and useful Improvements inMachines for Hammering or Swaging Iron and other Metals, of which thefollowing is a full, clear, and exact de scription, reference being hadto the accompanying drawings, making part of this specification, inwhich- Figure 1 is a front elevation; and Fig. 2 a cross verticalsection taken atthe line A, of Fig. 1.

The same letters indicate like parts in all the figures.

My invention is of a machine for hammering or swaging iron and othermetals which is partially described and represented in Letters Patentgranted to me by the United States and bearing date the 16th day ofJanuary 1855, for improved dies for making bolts, and therein describedas the means of operating the dies and not claimed in the said patent asit constitutes a different subject matter.

My said invention consists in mounting the faces of two hammers one oneach side of a rocking frame having its axis of vibration on oppositesides of two anvils, and the said rocking frame being caused to vibrateand strike a blow alternately on opposite sides by the rotation of ashaft provided with eccentrics fitted to work in boxes sliding insuitable housings in the rocking frame by means of which arrangement thereaction induced by striking a blow with one hammer on one side will aidthe driving power in vibrating the rocking frame to strike a blow withthe other hammer on the opposite side.

In the accompanying drawings a, a represent the base composed of twolongitudinal bars and three cross bars I), b, b firmly secured to theupper surface, or if made of metal the whole may be cast in one pieceand firmly secured to the foundation timbers of the shop. To the uppersurface of the cross bars are secured suitable boxes to receive thejournals 0 of two rocking frames cl, d. These rocking frames should bemade of great strength and to consist each of two cheeks e, 6, connectedby cross bars f, f one on each side. The under faces of these crossbars, which should be above the axis of vi bration, are formed likehammer faces or Z in standards m, m, m secured to the top of the crossbars 6, Z), Z), of the bed. The longitudinal bars a, a of the bed areformed with sockets to which are accurately fitted anvils or swage diesat, a one under each hammer and so located that as the rockingframesvibrate each hammer will act on its appropriate anvil. The lower end ofeach anvil rests on a cross wedge 0 fitted to move in a suitable holefor that purpose in the longitudinal bars a, a so that by moving thewedges in and out the anvils can be elevated or depressed at pleasurewhether before or during the operation of hammering or swaging. V

From the foregoing it will be seen that for each rotation of the shaftthe hammers on each rocking frame will each strike a blow, as one hammeris attached on each side of the axis of vibration the rebound due to thestriking of one hammer will aid in striking the blow with the hammer onthe other side. The two rocking frames are alike, and the two sets ofeccentrics on the shaft are placed at 180 degrees so that one hammer ofeach rocker frame on opposite sides should strike at the same time, thusequalizing the resistance.

It will be seen that any form of swage dies or hammers and anvils may beused at pleasure.

What Iclaim as my invention and desire to secure by Letters Patent, is

Mountingthe hammers on opposite sides of a rocking frame operated byeccentrics, or their equivalents substantially as specified, incombination with the anvils placed on opposite sides of the axis ofvibration of the said rocking frames, as described and for the purposespecified.

J. T. WILLMARTH.

Witnesses:

A. 1?. BROWN, WM. H. BIsHoP.

